Moss removal + treatment, average house
- Typical range
- $380-610 (Angi Gig Harbor, avg about $508)
- What changes the price
- Roof size, steepness, 2 stories vs 1, how thick the moss is
Gig Harbor · Fox Island · Purdy
Roof moss removal in Gig Harbor
Shade, firs and nine wet months make Gig Harbor roofs grow moss fast. Here's what removal costs, how it should be done, and what to ask before you hire.
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Roof moss removal
At a glance
$380-610typical Gig Harbor roof moss job (Angi local average about $508)
Every 1-2 yrshow often most shaded roofs here need treatment
WSDA licenseWashington requires one to apply moss killer for pay
Moss holds water against shingles, lifts their edges and clogs gutters. On the Gig Harbor peninsula, roofs under big firs and cedars can go from a green tint to thick mats in a couple of seasons.
A good moss job has two parts: removal (brushing or gently scraping moss off, never high-pressure blasting that strips the granules from shingles) and treatment (a moss-control product that kills the roots and slows regrowth). Most pros finish by clearing the gutters and downspouts the moss lands in.
How it works
- Tell us about the jobA short form, about two minutes. Free and no obligation.
- We pass it to up to 3 local prosIndependent businesses that do this work in your area.
- Compare quotes and chooseHire one, or nobody. Your contract is with them, not with us.
What it costs
Typical public ranges, not quotes
These are typical ranges from public cost guides, not quotes. Roof size, pitch, height and how thick the moss is change the price.
Treatment only (light growth)
- Typical range
- lower than full removal
- What changes the price
- Roof size, product used
Gutter cleaning added on
- Typical range
- often bundled
- What changes the price
- Length of gutter, downspout clogs
Repair of lifted or damaged shingles
- Typical range
- quoted separately
- What changes the price
- Found during the cleaning
Fall and late winter are the busiest times. Booking in late spring or summer is often easier.
How the job usually goes
- Inspection. The pro checks how thick the moss is, the roof's age and type, and any lifted shingles.
- Removal. Hand brushing or soft scraping. Ask them not to use high pressure on asphalt shingles.
- Treatment. A moss-control product kills what's left and slows regrowth.
- Cleanup. Moss is cleared from gutters, downspouts and the ground below.
- Follow-up. Most roofs here need a treatment every 1-2 years. Some pros offer a plan.
Local rules worth knowing
Pesticide license. Moss-control products count as pesticides in Washington. The state Department of Agriculture (WSDA) says a business that does moss control on roofs or lawns for clients, even once, needs a commercial pesticide applicator license, and its workers need operator licenses. Source: WSDA fact sheet.
Contractor registration. Roof work generally needs a Washington L&I contractor registration. Check the number on the L&I site.
Runoff near the water. Many Gig Harbor homes drain toward the harbor or Puget Sound. Ask which product they use and how they keep it out of storm drains and the water.
Before you hire: a short checklist
- Ask for their WSDA pesticide license number if they will apply any moss treatment.
- Ask for their WA L&I contractor registration and check it.
- Ask how they remove moss. Brushing is gentler than pressure washing on shingles.
- Ask what product they use and how they protect plants, pets and runoff.
- Get gutter cleaning and any guarantee (some offer 1-2 years) in writing.
Questions
Is roof moss really a problem or just cosmetic?
It's more than looks. Moss holds water against the roof, lifts shingle edges and clogs gutters, which can shorten the roof's life. Light growth can often be treated before it gets thick.
Can I pressure wash my roof?
High pressure can strip the protective granules from asphalt shingles. Most roofing makers and moss pros recommend brushing and treatment instead.
How often does a Gig Harbor roof need it?
Shaded roofs under evergreens often need a treatment every 1-2 years. Sunny roofs can go longer.
Does the company need a license?
Washington's WSDA says businesses that apply moss-control products for clients need a pesticide applicator license. Roof work generally also needs an L&I contractor registration.
Are you a roofing company?
No. We're a free referral service. We pass your request to up to 3 independent local pros, and you hire one of them, or none, directly.
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